Rosette cutter-head



(No Model.) 2 Sheets-Sheet l.

' R. HARRIS.

ROSETTB CUTTER HEAD.

No. 591,040. Patented Oct. 5,1897.

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(No Model.) 2 Sheets Sheet 2. R. HARRIS. .ROSETTB GUTTER HEAD.

No. 591,040. 4 Patented Oct. 5,1897. t

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y `niifrn arnr ROSETTE CIUTTERHjh-IEAD.

SPECIFICATION forming part of Letters Patent No. 591,040, dated October 5, 1897.

Application tiled March l5, 1897.

T0 @ZZ whom, it may concern:

Be it known that I, RUTLEDGE HARRIS, a citizen of the United States, residing at Cedar Falls, in the county of Black Hawk and State of Iowa, have invented certain new and useful Improvements in Rosette Cutter-Heads; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same. i

This invention relates to machines for producing rosettes and the like used in the finishing of houses; and the object of the invention is to so construct a cutter-head as to enable the operator to produce such rosettes rapidly with a smooth clean figure and in a great variety of forms.

The nature of the invention will fully appear in the description and claims following, reference being had to the accompanying drawings, in which-.

Figure l is a side elevation of a machine embodying the invention as applied to a specially-designed shaping-machine. Fig. 2, Sheet 2, is a view of the improved cutterhead in perspective. Fig. 3 is a plan view of the same, but with the face-.plate lined in concentric rings for convenience in adjusting the cutters. Fig. 4L is a cross-section of the same in the line w. Fig. 5 is a cross-section of a rosette produced by the cutter-head illustrated.

` Similar letters of reference indicate corresponding parts.

The cutter-head which forms the subjectmatter of this invention may be applied to machines of many styles and types; but for the sake of illustrating its operation I have shown it as applied to a machine in the nature of a woodworking Shaper, this being a very convenient kind of machine for this special purpose as well as its more general uses.

The machine has a frame A of conventional style, with a suitable fiat top A'. It is provided with the usual vertical mandrel B, provided with a pulley B', driven by a belt C. To the table A is secured a press-frame D, having a suitable head D', in which slides a plunger E, having an enlarged head E'. The plunger is held upwardly by a coil-spring F,

seau No. 627,727. on moda.)

bearing at one end against the upper end of the head D and a collar E2 on the plunger. A hand-lever G, pivoted to the plunger at E3 and at one end to a link II, which is also pivoted to the press-frame at D2, enables the operator to force the plunger downwardly. Below the plunger-head is a bed-plate D4,

mounted on elastic supports D5, preferably made of rubber. At the back of the bedplate is adj ustably mounted a suitable vgage D6. It will be understood that there is a hole in the bed-plate large enough to allow the cutter-head I to pass through, and this is indicated bythe dotted lines 011 the edge of the bed-plate.

To the upper end of the mandrel is secured in the usual way the face-plate I, which, with its cutters, constitute the cutter. This is in the nature of an ordinary face-plate for a lathe and may be perfectly plane on the outer or upper face, as shown in Fig. 2, but is preferably provided with a series of concentric lines or grooves, as shown in Fig. 3, to render more convenient the placing and adjustment of the cutters. The face-plate is provided with a series of tapered holes I to take the Shanks of thecutters.

The cutters J J2 J 3 J 4 have blades of a shape corresponding to the work to be done, and these blades are made to stand at a raking angle to the shanks J5, J6, J7, and J S, respectively, and whatever the angle may be to get a smooth clean cut the taper-shank will hold the cutter firmly in position. noted that the shanks are circular in crosssection, and this enables the operator to adjust the cutter so that the cutting edge may stand at any desirable angle to the radius of the cutter-head, so as to give a drawing cut to said cutting edge, and thus make the action of the cutter as smooth and delicate as may be required. The shank of each cutter is screw-threaded at the end and is provided with a suitable bur K. By this means the cutters may be easily and quickly attached and detached or set at any desired angle. It will be evident that the angle in the body of the cutter permits a considerable variation It is to beV in the position of the cutting edge, and by this means the pattern may be varied in size and to a considerable extent in form without moving any of the cutters from their respective holes, but simply by turning them therein.

In the operation of the machine illustrated in Fig. lthe rosette-block is placed on the bed-plate and against the back gage. The hand-lever is then depressed, forcing down thelblock and bed-plate until the lower surface of the block is so far below the upper ends of the cutters as to form the desired pattern therein. The Work may be done very rapidly, and in practice the product is as cleanly cut as though done by hand on a turning-lathe, and of course precisely alike in all so produced.

Having thus described my invention, I claim- 1. In a rosette cutter-head,the combination of a face-plate having a series of round conical holes therein, and one or more cutters having a tapered shank itting said holes, a threaded extremity and a nut therefor, and

a blade having laterally-extended cutting edges and standing at a raking forward and pitched angle to said shank, substantially as and for the purpose set forth.

2. In a rosette cutter-head, the combination of a face-plate provided With a series of concentric lines or grooves, and a series of round tapered holes for the cutter-Shanks, and one ormore cutters having tapered, screw-threaded shanks and a cutting-blade having laterally-extended cutting edges and standing at a forwardly-inclined angle thereto, and a retaining-nut for the shank,substantially as and for the purpose set forth.

In testimony whereof I aftiX my signature in presence of two Witnesses.

RUTLEDGE HARRIS.

Witnesses:

HUGH MoCARrNEY, N. Il. HARRIS. 

